招平断裂带台上——水旺庄段三维地质模型构建及矿体空间分布规律
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Construction of ThreeDimensional Geological Model and Spatial Distribution Law of Ore Body in Taishang Shuiwangzhuang Section of Zhaoping Fault Zone
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    摘要:

    招平断裂带是胶东三大控矿断裂带之一,其台上水旺庄段已探明大—超大型金矿床7处,本文利用375个钻孔资料搭建了台上水旺庄段三维地质模型,系统研究区内三维地质结构,基于大数据技术分析了矿体分布和富集规律。在三维空间内各矿区主矿体沿招平断裂带主裂面下盘分布,其中1711号矿体和②号矿体连为一体,为一超大矿体。对建模区内主要矿体进行压缩,统计矿体厚度、品位、厚度×品位的分布和变化规律,矿体品位分布不均匀,整体表现为中间品位相对较高,边部品位较低,矿体厚度沿走向和倾向均呈现厚薄相间变化,矿体品位与厚度相关系数为0.192,矿体品位×厚度的三维分布构成了4处矿化富集区,对矿化富集区进行坡度与矿化强度关系分析,矿体主要富集在构造沿倾斜方向上由陡急速变缓中的转折段和缓倾段,在走向上构造波状变化中的舒缓地段易于矿体富集。

    Abstract:

    Zhaoping fault zone is one of three major ore controlling fault zones in Jiaodong area. Seven largescale and super large gold deposits have been proved in TaishangShuiwangzhuang section. In this paper, by using 375 borehole data, a threedimensional geological model of TaishangShuiwangzhuang section has been built. Threedimensional geological structures in the area has been studied systematically, and the distribution and enrichment law of ore bodies based on big data technology have been analyzed. In threedimensional space, main ore bodies in each mining area are distributed along the footwall of the main fracture surface of Zhaoping fault zone. No.1711 ore body and ② ore body are connected as a whole, which is a super large ore body. After compressing main ore bodies in the modeling area, distribution and variation law of the thickness, grade and the product of thickness and grade have been counted. It is showed that the grade distribution of ore body is uneven. The grade in the middle section is relatively high and the grade in the edge is low. The thickness of ore body varies from thick to thin along the strike and tendency. The correlation coefficient between ore body grade and thickness is 0.192. The threedimensional distribution of the product of grade and thickness has formed four mineralization enrichment areas. The relationship between slope and mineralization intensity in mineralization enrichment areas has been carried out. The ore bodies are mainly concentrated in the turning section and gently inclined section in which the structure changes from steep to slow along the inclined direction. In the strike, the soothing section in the structural wavy change is easy to enrich ore bodies.

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王永庆,钮涛,杨真亮,李瑞翔,刘天鹏,张腾.招平断裂带台上——水旺庄段三维地质模型构建及矿体空间分布规律[J].山东国土资源,2022,38(7):

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  • 在线发布日期: 2022-07-27